# List of Colgate University societies

Since being founded in 1819, Colgate University has had a rich tradition of student societies. Literary societies, Greek letter fraternities and sororities, non-Greek letter organizations, honor societies, and secret societies have all played a part in Colgate history.
Social fraternities came to Colgate in 1850 when Alpha Delta Phi was granted a chapter. The first sorority was brought to Colgate in 1982 when a chapter of Gamma Phi Beta (Gamma Phi) received a charter.
Secret or underground organizations have had a widespread existence at Colgate University. Many of the school's original societies had roots as underground organizations. In terms of secret honor societies, Colgate has also had its fair share. Two secret Honor Societies, the Gorgon's Head and Skull and Scroll, enjoyed a period as rival societies until 1934 when they merged to form Konosioni, now known as the Tredecim Senior Honor Society. Even with its history, Tredecim is no longer a secret society but is now seen as a leadership society, with only 26 members of each graduating class peer-selected to membership.
Following is a list of Colgate University societies, organized by charter date. Active organizations are indicated in bold.
| Name | Charter date and range | Type | Status |
| Society for Inquiry | 1824 | Literary | Inactive |
| Gamma Phi | bef. 1833–1840 | Literary | Inactive |
| Pi Delta | c. 1834–1840 | Literary | Inactive |
| Adelphian Society | 1840–1880 | Literary and oration | Inactive |
| Aeonian Society | 1840–1887 | Literary and oration | Inactive |
| Alpha Delta Phi | 1850–1851; 1964–1972 | Social fraternity | Inactive |
| Delta Kappa Epsilon | 1856–2009 | Social fraternity | Inactive |
| Delta Upsilon | 1865 | Social fraternity | Active |
| Aldelphia | 1872–1880 | Social fraternity | Merged |
| Delta Phi | 1874–1876 | Social fraternity | Inactive |
| Aeonia | 1880–1887 | Social fraternity | Merged |
| Union Debating Society | 188x ?–1887 | Literary and oration | Merged |
| Beta Theta Pi | 1880 | Social fraternity | Active |
| Theta Nu Epsilon | 1880 | Social fraternity | Inactive |
| Phi Kappa Psi | 1887–1982 | Social fraternity | Inactive |
| Phi Gamma Delta | 1886–1969, 1976–1989 | Social fraternity | Inactive |
| Madison Club | 1902–1917 | Literary and oration | Inactive |
| Owls Club | 1907–1908 | Non-Greek fraternal organization | Inactive |
| Gorgon's Head | 1908–1934 | Secret senior honor society | Merged |
| Sigma Alpha | 1909–1918 | Social fraternity | Merged |
| Theta Mu | 1911–1912 | Social fraternity | Merged |
| Skull and Scroll | 1912–1934 | Secret senior honor society | Merged |
| Theta Chi | 1912 | Social fraternity | Active |
| Theta Delta Sigma | 1914–1917 | Social fraternity | Merged |
| Lambda Chi Alpha | 1916–1972 | Social fraternity | Inactive |
| Alpha Tau Omega | 1917–2000 | Social fraternity | Inactive |
| Sigma Nu | 1917–1968 | Social fraternity | Inactive |
| Kappa Delta Rho | 1917–1972, 1985–2003 | Social fraternity | Inactive |
| Phi Delta Theta | 1918–1968, 1973 | Social fraternity | Active |
| Theta Pi Delta | 1923–1930 | Social fraternity | Merged |
| Delta Pi Sigma | 1927–1937 | Social fraternity | Merge |
| Colgate Commons Club | 1927–1960 | Counter-culture fraternal organization | Inactive |
| Alpha Psi Omega | 1928–May 2023 | Honor society, theater | Inactive |
| Sigma Chi | 1930–1963, 1971–2015 | Social fraternity | Inactive |
| Tredecim Senior Honor Society.(previously Konosioni) | 1934–20xx ? | Senior leadership society | Active |
| Phi Kappa Tau | 1937–1971, 2007 | Social fraternity | Active |
| Psi Chi | May 18, 1950 | Honor society, psychology | Active |
| Alpha Beta | 1951–1956 | Social fraternity | Merged |
| Tau Kappa Epsilon | 1956–1972 | Social fraternity | Inactive |
| Alpha Chi Epsilon | 1960–1964 | Social fraternity | Merged |
| Beta Beta Beta | 1971 | Honor society, biology | Active |
| Phi Tau | 1971–20xx ? | Social fraternity, local | Inactive |
| Delta Nu | 1979–1981 | Social sorority | Merged |
| Delta Sigma Upsilon | 1980–1988 | Social sorority, local | Inactive |
| Chi Omega Rho | 1981–1990 | Social fraternity, co-ed, local | Inactive |
| Gamma Phi Beta | 1982 | Social sorority | Active |
| Phi Eta Sigma | 1982 | First-year academic honor society | Active |
| Phi Psi | 1982–1992 | Social fraternity, local | Inactive |
| Alpha Theta Pi | 1984–1988 | Social sorority, local | Merged |
| Kappa Psi Lambda | 1984–1986 | Social sorority | Merged |
| Zeta Delta Pi | 1985–1988 | Social sorority | Merged |
| Pi Beta Phi | 1986–1992 | Social sorority | Inactive |
| Kappa Alpha Theta | 1988–2008 | Social sorority | Inactive |
| Kappa Kappa Gamma | 1988 | Social sorority | Active |
| Pi Beta Phi | 1986–1992 | Social sorority | Inactive |
| Alpha Chi Omega | 1988–1996 | Social sorority | Inactive |
| Delta Delta Delta | 1996 | Social sorority | Active |
| Brothers of Colgate | 1999 | Social fraternity, local | Active |
| Alpha Epsilon Pi | 2005–2013 | Social fraternity | Inactive |
| Blue Diamond Society | 2006 | Social fraternity, local | Active |
| Sorella Society | 2008 | Social sorority, local | Active |